Abstract: An expendable launch vehicle is provided using pressure-fed liquid propellant fixed steering ablatively-cooled rocket engines. The vehicle is manufactured minimizing toxic or exotic metals and maximizing the use of conventional, inexpensive composites and 3D printed parts. Fuselage, fairing, stage shells, adapters, propellant tanks, and even engine combustion chambers are unified for all stages, are ablatively cooled, and, like the fairing, integral propellant tanks and adapters, are made of composites or 3D printed parts. Using non-toxic materials with non-toxic by-products, and non-toxic fabrication methods, using mostly non-metallic components allows for an environmentally neutral design.

Abstract: A covered food serving pan is provided having a food pan from which a flange with tab retainers extends, and a cover with tabs extending from an edge. These tabs engage tab retainers on a flange of the food pan and allow the cover to rotate with respect to the food pan. A method is provided for attaching a cover to a food serving pan by sliding the tabs toward the tabs retainers and engaging them with the tab retainers, rotating the cover about the tab retainers along a first axis of rotation, translating the cover in a direction parallel to the axis of rotation, and again rotating the cover about the axis of rotation until the open end of the pan is covered.